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Spheniscus demersus   (Linnaeus, 1758)

jackass penguin
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Image of Spheniscus demersus (jackass penguin)
Spheniscus demersus
Picture by FAO

Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS

Aves | Ciconiiformes | Spheniscidae

Environment / Climate / Range Ecology

Others.  Subtropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Western Indian Ocean and Eastern Atlantic.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?  range ? - ? cm Max length : 70.0 cm TL male/unsexed; (Ref. 91362); max. published weight: 3.1 kg (Ref. 356)

Biology     Glossary (e.g. epibenthic)

Population decline was recorded in the 19th century wherein 295,000 birds in 1956 became 170,000 birds in 1978. Threats include oil pollution, fisheries, and competition for food and space (Ref. 84934). This is a gregarious species that is commonly found in small groups and within 50 km of shoreline. It breeds in huge colonies in burrows (Ref. 91362), mainly on offshore islands (Ref. 84934). Underwater pursuit (Ref. 356).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference References | Coordinator | Collaborators

Harrison, P. 1987. (Ref. 91362)

IUCN Red List Status (Ref. 115185)

  Endangered (EN) (A2ace+3ce+4ace)

CITES status (Ref. 108899)

CMS (Ref. 116361)

Threat to humans

Human uses


| FisheriesWiki |

More information

Countries
FAO areas
Ecosystems
Occurrences
Introductions
Stocks
Ecology
Diet
Food items
Common names
Synonyms
Predators
Reproduction
Maturity
Spawning
Fecundity
Eggs
Egg development
Age/Size
Growth
Length-weight
Length-length
Morphology
Larvae
Abundance
References
Mass conversion

Internet sources

BHL | BOLD Systems | CISTI | DiscoverLife | FAO(Publication : search) | GenBank (genome, nucleotide) | GloBI | GOBASE | Google Books | Google Scholar | Google | ispecies | PubMed | Scirus | Tree of Life | uBio | uBio RSS | Wikipedia (Go, Search) | Zoological Record

Estimates of some properties based on models

Price category (Ref. 80766)
Unknown